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<title>C++ Local Variables.</title>
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<center><h1>C++ Local Variables.</h1></center>
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<p>

There is not much difference between 
<a href=../../C/SYNTAX/glo_int_vars.html> C local variables</a> but there
is one important feature that should be noted.
<ul>
<li>Variable definitions are now considered to be executable statements.
</ul>
This means that you can now put variable definitions anywhere in the code 
and not jut at the start of a 
<a href=../../C/glossary.html#block>block.</a>
Here is an example.

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    main()
    {
        float pi = 3.142;   // Usual location for variable definitions
        
        cout << "PI is " << pi << endl;
        
        int Count = 1;      // C++ allows us to place a definition here.
        
        while (Count < 10)
        {
            cout << Count << endl;
        }
    }
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<p>

It should be noted that <b>Count</b> is only in scope (usable) from the 
point of definition and to the end of the block.
It can not be used in the previous <b>cout</b> statement.  
<p>

The idea of this feature is to allow you to put variable declarations 
near to the place 
you wish to use them. Personnaly, I feel this should not be neccasary
if you write small concise functions....

There is one natty feature of this facility though. Check this 
example out.
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<pre>

    main()
    {
        int Last = 10;      
        
        while (int Count; Count < Last; Count++)
        {
            cout << Count << endl;
        }
    }
</pre>
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<p>
In this example, <b>Count</b> is defined inside the <b>for</b> 
statement and only exists while the for block is being executed.


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<h2>Examples:</h2>
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<h2>See Also:</h2>

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<h2>C References</h2>
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<img src="../../GRAPHICS/whiteball.gif" alt="o">
<a href=../../C/SYNTAX/glo_int_vars.html> C local variables</a>
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<img src="../../GRAPHICS/whiteball.gif" alt="o">
<a href="../../C/CONCEPT/data_types.html">data types</a>.

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<address><a href="../../address.html">Martin Leslie</a> 
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